Question

How many hydrogens are attached to each of the indicated carbons in morphine?

Short answer

(a) 3 (b) 2 (c) 1 (d) 1 (e) 0 (f) 0 (g) 1 (h) 0 (i) 1 (j) 0

Step-by-step solution

(a) Number of bonds of carbon atoms

Because none of the carbon atoms in the complex have a charge, they must be connected to four other atoms.

(b) Number of hydrogens for one visible bond

If only one bond is visible, the carbon atom must be joined to three hydrogens that are not visible, as in the case of (a).

(c) Number of hydrogens for two visible bonds

If two bonds are visible, the carbon atom must be attached to two hydrogens that are not visible as in the case of (b).

(d) Number of hydrogens for three visible bonds

If three bonds are visible, the carbon atom must be attached to one hydrogen that are not visible as in the case of (c), (d), (g) and (i).

(e) Number of hydrogens for four visible bonds

If four bonds are visible, the carbon atom is not attached to any hydrogen as in the case of (e), (h) and (j).